it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
-
+
Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//// Includes
////
-#include "position.h"
-
+#include "bitboard.h"
+#include "value.h"
////
//// Types
////
-/// PawnInfo is a class which contains various information about a pawn
+/// PawnInfo is a class which contains various information about a pawn
/// structure. Currently, it only includes a middle game and an end game
/// pawn structure evaluation, and a bitboard of passed pawns. We may want
/// to add further information in the future. A lookup to the pawn hash table
/// (performed by calling the get_pawn_info method in a PawnInfoTable object)
/// returns a pointer to a PawnInfo object.
+class Position;
class PawnInfo {
Value kingside_storm_value(Color c) const;
Value queenside_storm_value(Color c) const;
Bitboard passed_pawns() const;
- bool file_is_half_open(Color c, File f) const;
- bool has_open_file_to_left(Color c, File f) const;
- bool has_open_file_to_right(Color c, File f) const;
+ int file_is_half_open(Color c, File f) const;
+ int has_open_file_to_left(Color c, File f) const;
+ int has_open_file_to_right(Color c, File f) const;
private:
void clear();
Key key;
Bitboard passedPawns;
int16_t mgValue, egValue;
- int8_t ksStormValue[2], qsStormValue[2];
+ int16_t ksStormValue[2], qsStormValue[2];
uint8_t halfOpenFiles[2];
};
PawnInfoTable(unsigned numOfEntries);
~PawnInfoTable();
void clear();
- PawnInfo *get_pawn_info(const Position &pos);
+ PawnInfo* get_pawn_info(const Position& pos);
private:
unsigned size;
- PawnInfo *entries;
+ PawnInfo* entries;
};
return Value(qsStormValue[c]);
}
-inline bool PawnInfo::file_is_half_open(Color c, File f) const {
+inline int PawnInfo::file_is_half_open(Color c, File f) const {
return (halfOpenFiles[c] & (1 << int(f)));
}
-inline bool PawnInfo::has_open_file_to_left(Color c, File f) const {
+inline int PawnInfo::has_open_file_to_left(Color c, File f) const {
return halfOpenFiles[c] & ((1 << int(f)) - 1);
}
-inline bool PawnInfo::has_open_file_to_right(Color c, File f) const {
+inline int PawnInfo::has_open_file_to_right(Color c, File f) const {
return halfOpenFiles[c] & ~((1 << int(f+1)) - 1);
}
inline void PawnInfo::clear() {
- mgValue = egValue = 0;
+
passedPawns = EmptyBoardBB;
+ mgValue = egValue = 0;
ksStormValue[WHITE] = ksStormValue[BLACK] = 0;
qsStormValue[WHITE] = qsStormValue[BLACK] = 0;
halfOpenFiles[WHITE] = halfOpenFiles[BLACK] = 0xFF;